Only if we're talking specifically about cutting edge logic. There's Texas Instruments and GlobalFoundries in the US on the trailing edge for logic. In memory, where the fabrication techniques are similar, there's Micron, IMFT in Utah, and Samsung in Texas. Not to mention that TSMC is building a leading edge logic fab in Arizona.
And then of course there are all of the capital equipment suppliers, where the US punches way above its weight. Applied Materials, Lam Research, and KLA are all headquartered in California and employ a lot of the same talent that Intel does.